To make thinner, as by physically reshaping, starving, or decaying.
To reduce the amplitude of an electrical, radio, or optical signal.
To weaken.
To reduce in size, force, value, amount, or degree.
To become thin or fine; to grow less.
To rarefy.
(of a beer) To become less dense as a result of the conversion of sugar to alcohol.
To reduce the virulence of a bacterium or virus.
Gradually tapering into a petiole-like extension toward the base.
To cleanse, or rid of impurities.
To become pure.
To free from guilt or sin.